ES1188008U - Calibrated thickness and width tape (Machine-translation by Google Translate, not legally binding) - Google Patents
Calibrated thickness and width tape (Machine-translation by Google Translate, not legally binding) Download PDFInfo
- Publication number
- ES1188008U ES1188008U ES201730617U ES201730617U ES1188008U ES 1188008 U ES1188008 U ES 1188008U ES 201730617 U ES201730617 U ES 201730617U ES 201730617 U ES201730617 U ES 201730617U ES 1188008 U ES1188008 U ES 1188008U
- Authority
- ES
- Spain
- Prior art keywords
- tape
- thermoplastic polymer
- laying
- polymer
- consolidation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 26
- 239000000835 fiber Substances 0.000 claims abstract description 22
- 238000007596 consolidation process Methods 0.000 claims abstract description 20
- 238000011065 in-situ storage Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 10
- 229920002530 polyetherether ketone Polymers 0.000 claims description 10
- 238000003490 calendering Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 20
- 229920000642 polymer Polymers 0.000 description 19
- 238000000034 method Methods 0.000 description 15
- 239000011265 semifinished product Substances 0.000 description 14
- 238000002844 melting Methods 0.000 description 11
- 230000008018 melting Effects 0.000 description 11
- 238000000151 deposition Methods 0.000 description 8
- 230000008021 deposition Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 238000005470 impregnation Methods 0.000 description 6
- 238000013517 stratification Methods 0.000 description 6
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000005056 compaction Methods 0.000 description 4
- 229920001187 thermosetting polymer Polymers 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011157 advanced composite material Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920005594 polymer fiber Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009705 shock consolidation Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
Abstract
Description
55
1010
15fifteen
20twenty
2525
3030
CINTA DE ESPESOR Y ANCHURA CALIBRADOSCALIBRATED THICKNESS AND WIDTH TAPE
DESCRIPCIONDESCRIPTION
La invencion se refiere a una cinta de espesor y anchura calibrados para el tendido de cinta y la consolidation tras la deposition de una pieza de trabajo termoplastica de material compuesto con refuerzo de fibra.The invention relates to a tape of thickness and width calibrated for the laying of tape and consolidation after the deposition of a thermoplastic work piece of composite material with fiber reinforcement.
El tendido de cinta automatico, depositando cintas o colocando fibras pre- impregnadas, es un metodo de fabrication que esta muy generalizado en el area de la preparation de piezas de material compuesto con refuerzo de fibra en una matriz termoestable. Esto es debido a que la adhesividad y fluidez de estas resinas hace posible lograr una calidad de la pieza de trabajo que esta libre de huecos y porosidades durante las posteriores operaciones de deposicion y curado. Con cintas llamadas pre-impregnadas con un polfmero termoplastico, dicho polfmero no muestra adhesividad a la temperatura de tendido de cinta. La 'pre-impregnation' se lleva a cabo en la practica tanto por calandrado de una pelfcula constituida de dicho polfmero sobre dichas cintas de fibra como por el recubrimiento con polvo de dichas fibras o insertando fibras de polfmero mezcladas junto con las fibras de refuerzo. A menos que se indique lo contrario, los terminos 'pre-impregnacion' y 'pre-impregnado' en relation con las fibras y un polfmero termoplastico debe entenderse en el significado practico expuesto anteriormente. Las capas que son sucesivamente depositadas se unen entre si fundiendo el polfmero. Pero el polfmero termoplastico fundido se caracteriza por una viscosidad muy alta, frecuentemente de varios ordenes de magnitud en comparacion con las resinas termoendurecibles no curadas. Asf, incluso cuando la carga de polfmero contenida en la cinta fibrosa esta fundida, es muy diffcil de obtener la impregnacion eficaz de todas las capas depositadas. Ademas, aunque la viscosidad del polfmero fundido puede reducirse aumentando la temperatura, generalmente mas alla de la temperatura de fusion, el polfmero se hincha entonces significativamente y es diffcil de controlar en un proceso de deposicion dinamica. Como resultado, quedan huecos o porosidades en la pila, con mayor razon aun cuando la velocidad de deposicion, o mas precisamenteThe laying of automatic tape, depositing tapes or placing pre-impregnated fibers, is a manufacturing method that is very widespread in the area of the preparation of pieces of fiber reinforced composite material in a thermosetting matrix. This is because the adhesiveness and fluidity of these resins makes it possible to achieve a work piece quality that is free of gaps and porosities during subsequent deposition and curing operations. With so-called tapes pre-impregnated with a thermoplastic polymer, said polymer does not show adhesiveness at the tape laying temperature. The 'pre-impregnation' is carried out in practice both by calendering a film constituted of said polymer on said fiber tapes and by powder coating of said fibers or by inserting polymer fibers mixed together with the reinforcing fibers. Unless otherwise indicated, the terms 'pre-impregnation' and 'pre-impregnated' in relation to the fibers and a thermoplastic polymer should be understood in the practical meaning set forth above. The layers that are successively deposited are joined together by melting the polymer. But molten thermoplastic polymer is characterized by a very high viscosity, often of several orders of magnitude compared to uncured thermosetting resins. Thus, even when the polymer charge contained in the fibrous tape is melted, it is very difficult to obtain the effective impregnation of all deposited layers. In addition, although the viscosity of the molten polymer can be reduced by increasing the temperature, generally beyond the melting temperature, the polymer then swells significantly and is difficult to control in a dynamic deposition process. As a result, holes or porosities remain in the stack, with greater reason even when the deposition rate, or more precisely
55
1010
15fifteen
20twenty
2525
3030
la velocidad de salida del material depositado, es alta. Asf, aun cuando el polfmero termoplastico no requiera curado para lograr sus propiedades mecanicas, es, sin embargo, necesario consolidar la estratificacion obtenida por el tendido de cinta con el fin de obtener una pieza acabada que cumple los requisitos de las aplicaciones estructurales de una pieza tal. Tal consolidacion consiste en elevar la temperatura de la estratificacion obtenida por el tendido de cinta a la temperatura de fusion del polfmero, mientras que se mantiene el espesor de la pieza de trabajo por medios de despresurizacion, generalmente en un autoclave. Asf, el hacer que el polfmero se funda otra vez y sometiendolo al efecto de presion permiten la compactacion del conjunto y eliminan huecos y porosidades de dicha estratificacion. Adicionalmente, debido al hinchamiento del polfmero cuando esta fundido, la pieza de trabajo solo alcanza su espesor final despues de la operacion de compactacion que es posterior al tendido de cinta, y esa operacion hace necesario implementar medios tales como platos calientes que hacen posible obtener un espesor uniforme de la pieza de trabajo y la condicion superficial requerida de sus lados. Esa operacion de compactacion se lleva a cabo a la temperatura de fusion del polfmero termoplastico, y esa temperatura es generalmente significativamente superior a las temperaturas de curado de resinas termoendurecibles. La operacion implica el uso de medios tales como autoclaves, herramientas y consumibles, particularmente para lograr el sellado, y su coste es alto.The output speed of the deposited material is high. Thus, even if the thermoplastic polymer does not require curing to achieve its mechanical properties, it is, however, necessary to consolidate the stratification obtained by the laying of tape in order to obtain a finished piece that meets the requirements of the structural applications of a piece. such. Such consolidation consists in raising the temperature of the stratification obtained by laying the tape to the melting temperature of the polymer, while maintaining the thickness of the workpiece by means of depressurization, generally in an autoclave. Thus, causing the polymer to melt again and subjecting it to the pressure effect allows compaction of the assembly and eliminates gaps and porosities of said stratification. Additionally, due to the swelling of the polymer when it is melted, the work piece only reaches its final thickness after the compaction operation that is subsequent to the laying of tape, and that operation makes it necessary to implement means such as hot plates that make it possible to obtain a uniform thickness of the workpiece and the required surface condition of its sides. This compaction operation is carried out at the melting temperature of the thermoplastic polymer, and that temperature is generally significantly higher than the curing temperatures of thermosetting resins. The operation involves the use of means such as autoclaves, tools and consumables, particularly to achieve sealing, and its cost is high.
Todos los dispositivos conocidos del estado de la tecnica, y por ejemplo el dispositivo y metodo descrito en el documento EP-B-1 911 569, abordan el problema de la consolidacion, llamado la consolidacion in situ, es decir, durante la deposicion de cintas fibrosas pre-impregnadas con un polfmero termoplastico, buscando un metodo para calentar y someter a presion tan uniformemente como sea posible la cinta que se deposita y las capas pre- depositadas. Asf, la preparacion de una pieza de trabajo en una calidad que este libre de porosidades se basa en complejos dispositivos de calentamiento y aplicacion de presion que hacen posible mantener las capas depositadas a temperatura y presion suficientes durante un tiempo que es suficiente para permitir la impregnacion uniforme de las capas. Asf, los resultados se obtienen al precio de dispositivos complejos y al coste de eficiencia. Incluso con talAll known devices of the state of the art, and for example the device and method described in EP-B-1 911 569, address the problem of consolidation, called in situ consolidation, that is, during tape deposition Fibrous pre-impregnated with a thermoplastic polymer, looking for a method to heat and press as uniformly as possible the tape that is deposited and the pre-deposited layers. Thus, the preparation of a workpiece in a quality that is free of porosities is based on complex heating and pressure application devices that make it possible to keep the layers deposited at sufficient temperature and pressure for a time that is sufficient to allow impregnation. uniform layers. Thus, the results are obtained at the price of complex devices and at the cost of efficiency. Even with such
55
1010
15fifteen
20twenty
2525
3030
complejidad, estos metodos estan en la practica limitados en terminos de los espesores maximos que pueden as^ depositarse y consolidarse in situ y la experiencia industrial del solicitante muestra que no es posible, en condiciones de produccion industrial, usar estos metodos para lograr estratificaciones con mas de 8 capas apiladas que cumplan los requisitos para piezas estructurales de clase 2F en el campo de la aeronautica.complexity, these methods are in practice limited in terms of the maximum thicknesses that can be deposited and consolidated in situ and the applicant's industrial experience shows that it is not possible, under conditions of industrial production, to use these methods to achieve stratifications with more of 8 stacked layers that meet the requirements for structural parts of class 2F in the field of aeronautics.
El documento "Manufacturing processes for advanced composites” CapRulo 10, Elsevier Advanced Technology de 1 de enero de 2004, confirma que estos metodos de consolidacion in situ de una estratificacion de capas pre- impregnadas con un polfmero termoplastico no hacen posible lograr, en condiciones industriales, velocidades de consolidacion superiores al 90 % y que se requiere una etapa de post-consolidacion, particularmente usando una placa de compactacion, despues de la formacion de la cortina.The document "Manufacturing processes for advanced composites" Chapter 10, Elsevier Advanced Technology of January 1, 2004, confirms that these methods of consolidation in situ of a stratification of pre-impregnated layers with a thermoplastic polymer do not make it possible to achieve, under industrial conditions , consolidation rates greater than 90% and that a post-consolidation stage is required, particularly using a compaction plate, after curtain formation.
La invencion pretende remediar los inconvenientes del estado de la tecnica y para ese fin desvela una cinta de espesor y anchuras calibrados para un metodo de tendido de cinta de una cinta de fibras que comprende un polfmero termoplastico y de consolidacion durante la deposicion de una pieza de trabajo que se hace tendiendo cinta de esa manera, comprendiendo dicho metodo las etapas de:The invention aims to remedy the drawbacks of the state of the art and for this purpose discloses a tape of thickness and widths calibrated for a method of laying a tape of a fiber tape comprising a thermoplastic polymer and consolidation during the deposition of a piece of work that is done tending tape in that way, said method comprising the stages of:
a. pre-consolidar una cinta de fibras pre-impregnadas con el polfmero termoplastico;to. pre-consolidating a tape of pre-impregnated fibers with the thermoplastic polymer;
b. guardar dicha cinta pre-consolidada en forma de un producto semi-acabado;b. storing said pre-consolidated tape in the form of a semi-finished product;
c. tender la cinta de dicho producto semi-acabado sobre una capa de la misma naturaleza que se deposita primero en una forma que comprime dicho producto semi-acabado sobre dicha capa y calentar la superficie de separacion entre el producto semi-acabado y la capa depositada primero a una temperatura T, capaz de soldar el producto semi-acabado sobre dicha capa.C. lay the tape of said semi-finished product on a layer of the same nature that is first deposited in a way that compresses said semi-finished product on said layer and heat the separation surface between the semi-finished product and the first deposited layer at a temperature T, capable of welding the semi-finished product on said layer.
Asf, la pre-consolidacion hace posible obtener una cinta de fibras que esta libre de defectos tales como porosidades, eliminando el aire bloqueado en dichas fibras y en sus uniones, e impregnar uniformemente las fibras de dichaThus, the pre-consolidation makes it possible to obtain a fiber tape that is free of defects such as porosities, removing the air blocked in said fibers and in their joints, and uniformly impregnating the fibers of said fiber.
55
1010
15fifteen
20twenty
2525
3030
cinta, haciendo ademas posible aumentar la superficie de polimero expuesta a la soldadura durante la operacion de tendido de cinta. Asi, el metodo en la invencion no hace necesario fundir la totalidad del polimero incluido en la cinta pre-consolidada y el polimero incluido en las capas depositadas antes, sino simplemente elevar la temperatura de la superficie de separacion entre los dos a una temperatura que permita la soldadura en dicha superficie de separacion; esa temperatura es aproximadamente la temperatura de fusion del material y es menos limitante en terminos de viscosidad que la temperatura que permite la impregnacion de las fibras durante la consolidacion. El termino soldadura significa la fusion conjunta de al menos una capa superficial de cada uno de los elementos (cinta y capa pre-depositada) ensamblados de esa manera. Ademas del beneficio de la consolidacion in situ, estas condiciones permiten la rapida deposicion con medios simples, permitiendo la preparacion de formas complejas y/o el uso de cintas anchas para obtener los caudales masicos de tendido de cinta comparables a aquellos obtenidos con capas impregnadas con resinas termoendurecibles. En ausencia de consolidacion de alta temperatura al final del tendido de cinta, se reducen los costes de mecanizado, instalacion y consumibles.tape, also making it possible to increase the polymer surface exposed to welding during the tape laying operation. Thus, the method in the invention does not make it necessary to melt the entire polymer included in the pre-consolidated tape and the polymer included in the layers deposited before, but simply to raise the temperature of the separation surface between the two at a temperature that allows welding on said separation surface; that temperature is approximately the melting temperature of the material and is less limiting in terms of viscosity than the temperature that allows the impregnation of the fibers during consolidation. The term welding means the joint fusion of at least one surface layer of each of the elements (tape and pre-deposited layer) assembled in that way. In addition to the benefit of consolidation in situ, these conditions allow rapid deposition with simple means, allowing the preparation of complex shapes and / or the use of wide tapes to obtain the mass flow rates of tape laying comparable to those obtained with layers impregnated with thermosetting resins. In the absence of high temperature consolidation at the end of the tape laying, machining, installation and consumable costs are reduced.
La invencion puede implementarse segun las ventajosas realizaciones descritas mas adelante, que pueden considerarse individualmente o en cualquier combinacion tecnicamente operativa.The invention can be implemented according to the advantageous embodiments described below, which can be considered individually or in any technically operational combination.
Ventajosamente, la etapa (a) se lleva a cabo por pultrusion de hebras pre- impregnadas con polimero termoplastico a traves de una boquilla. Asi, el metodo de pultrusion permite la pre-consolidacion dinamica y rapida de la cinta de fibras pre-impregnadas y ademas permite el dimensionar el espesor y la anchura de la cinta. El paso a traves de una boquilla hace asi posible comprimir las mechas de hebras pre-impregnadas y obtener la distribucion homogenea de resina mientras que se elimina el aire incluido en las hebras.Advantageously, step (a) is carried out by pultrusion of strands pre-impregnated with thermoplastic polymer through a nozzle. Thus, the pultrusion method allows the dynamic and rapid pre-consolidation of the pre-impregnated fiber tape and also allows the thickness and width of the tape to be dimensioned. The passage through a nozzle thus makes it possible to compress the pre-impregnated strand wicks and obtain the homogeneous resin distribution while removing the air included in the strands.
Ventajosamente, la pre-consolidacion de la etapa (a) se lleva a cabo a una temperatura T1 superior a la temperatura de fusion del polimero termoplastico. Asi, la fluidez del polimero permite la perfecta impregnacion deAdvantageously, the pre-consolidation of step (a) is carried out at a temperature T1 higher than the melting temperature of the thermoplastic polymer. Thus, the fluidity of the polymer allows the perfect impregnation of
55
1010
15fifteen
20twenty
2525
3030
las fibras.the fibers
Ventajosamente, el producto semi-acabado se almacena en la etapa (b) en forma de un rollo que puede ser instalado y proporcionado por una maquina de tendido de cinta durante la etapa (c). La cinta de polfmero es suficientemente fina para prestarse a si misma a este modo de embalaje, que usa una tendencia natural de la cinta, particularmente en la entrega de la pultrusion, de enrollarse en ella misma al final de la consolidacion dinamica.Advantageously, the semi-finished product is stored in stage (b) in the form of a roll that can be installed and provided by a tape laying machine during stage (c). The polymer tape is thin enough to lend itself to this mode of packaging, which uses a natural tendency of the tape, particularly in the delivery of the pultrusion, to roll itself into the end of the dynamic consolidation.
En una realizacion particular, el polfmero termoplastico es una polieter- eter-cetona (PEEK), T1 = 400 °C y Tes igual a la temperatura de fusion cristalina del polfmero. Asf, el metodo segun la invencion hace posible crear, mediante tendido de cinta y consolidacion in situ, piezas de trabajo hechas de material compuesto con refuerzo de fibra continuo en una matriz de alto rendimiento tal sin requerir medios, tales como una estufa o autoclave, capaces de consolidar la pieza a alta temperatura.In a particular embodiment, the thermoplastic polymer is a polyether ether ketone (PEEK), T1 = 400 ° C and Tes equal to the crystalline melting temperature of the polymer. Thus, the method according to the invention makes it possible to create, by means of tape laying and consolidation in situ, work pieces made of composite material with continuous fiber reinforcement in a high performance matrix such without requiring means, such as a stove or autoclave, able to consolidate the piece at high temperature.
La invencion se describe a continuacion en sus realizaciones preferidas, que no son de ningun modo limitantes, y por referencia a las Figuras 1A y 1B en las que:The invention is described below in its preferred embodiments, which are by no means limiting, and by reference to Figures 1A and 1B in which:
- la Figura 1A es una vista lateral de un diagrama de principio de la operacion de pre-consolidacion por pultrusion de una cinta pre-impregnada fibrosa con un polfmero termoplastico segun una realizacion a modo de ejemplo del metodo segun la invencion;- Figure 1A is a side view of a principle diagram of the pultrusion pre-consolidation operation of a fibrous pre-impregnated tape with a thermoplastic polymer according to an exemplary embodiment of the method according to the invention;
- la Figura 1B es una vista lateral de un diagrama de principio del rendimiento de una operacion de tendido de cinta segun una realizacion a modo de ejemplo de la invencion.- Figure 1B is a side view of a principle diagram of the performance of a tape laying operation according to an exemplary embodiment of the invention.
En la Figura 1A, durante una primera etapa del metodo segun la invencion, hebras (110) constituidas de fibras, por ejemplo fibras de carbono, pre-impregnadas con un polfmero termoplastico, por ejemplo polieter-eter- cetona o PEEK, se pre-consolidan durante un proceso dinamico (120), por ejemplo pultrusion. Un proceso de pultrusion tal es conocido del estado de la tecnica y consiste, en una realizacion a modo de ejemplo no limitante, en elevarIn Figure 1A, during a first stage of the method according to the invention, strands (110) constituted of fibers, for example carbon fibers, pre-impregnated with a thermoplastic polymer, for example polyether ether ketone or PEEK, are consolidate during a dynamic process (120), for example pultrusion. Such a pultrusion process is known from the state of the art and consists, in an embodiment by way of non-limiting example, in raising
55
1010
15fifteen
20twenty
2525
3030
la temperatura de dichas hebras (110) pre-impregnadas por envoltura de pelfcula, recubrimiento con polvo o combinadas con hebras de polfmero a una temperatura proxima a la temperatura de fusion de dicho polfmero, por ejemplo cuando dichas hebras se pasan a un dispositivo de calentamiento de infrarrojos (125). Si el polfmero termoplastico esta hecho de PEEK, esa primera operacion de calentamiento eleva la temperatura de dichas hebras a una temperatura que oscila entre 300 °C y la temperatura de fusion cristalina de dicho polfmero, es decir, aproximadamente 360 °C dependiendo de la calidad de PEEK usada. Las hebras se pasan entonces a traves de una primera boquilla (126) llamada la boquilla caliente, elevada a una temperatura que es suficiente para la fluidez del polfmero fundido para impregnar las hebras regularmente. Para PEEK, esa temperatura T1 normalmente oscila entre la temperatura de fusion cristalina y 400 °C, de manera que T1 se establece preferentemente a 400 °C. Dicha boquilla tienen un hueco variable que hace posible formar gradualmente las hebras en una banda impregnada con un espesor y anchura definidos, banda que entonces se introduce en una boquilla de refrigeracion y de dimensionado (127). La banda consolidada (115) a la salida de la boquilla de dimensionado es delgada (1 capa) y suficientemente flexible para ser enrollada en un rodillo de almacenamiento (130) con un diametro apropiado. La banda asf pre- consolidada es estable y puede almacenarse indefinidamente a temperatura ambiente en forma de un producto semi-acabado. Asf, el producto semi- acabado (115) puede fabricarse en series muy largas, usando metodos de fabricacion continuos en fabricas dedicadas o unidades de produccion, alejadas e independientes de las unidades de tendido de cinta.the temperature of said strands (110) pre-impregnated by film wrapping, powder coating or combined with polymer strands at a temperature close to the melting temperature of said polymer, for example when said strands are passed to a heating device infrared (125). If the thermoplastic polymer is made of PEEK, that first heating operation raises the temperature of said threads to a temperature ranging between 300 ° C and the crystalline melting temperature of said polymer, that is, approximately 360 ° C depending on the quality of PEEK used. The threads are then passed through a first nozzle (126) called the hot nozzle, elevated to a temperature that is sufficient for the fluidity of the molten polymer to permeate the threads regularly. For PEEK, that temperature T1 normally ranges between the crystalline melting temperature and 400 ° C, so that T1 is preferably set at 400 ° C. Said nozzle has a variable gap that makes it possible to gradually form the strands in a band impregnated with a defined thickness and width, which band is then introduced into a cooling and dimensioning nozzle (127). The consolidated band (115) at the outlet of the sizing nozzle is thin (1 layer) and flexible enough to be rolled into a storage roller (130) with an appropriate diameter. The pre-consolidated band is stable and can be stored indefinitely at room temperature in the form of a semi-finished product. Thus, the semi-finished product (115) can be manufactured in very long series, using continuous manufacturing methods in dedicated factories or production units, remote and independent of the tape laying units.
En la Figura 1B, la pieza de trabajo de material compuesto se fabrica por tendido de cinta, colocando el rollo de producto semi-acabado (130) en una maquina de tendido de cinta. El tendido de cinta se lleva a cabo usando herramientas (150) esculpidas a la forma de la pieza de trabajo a hacer. Una maquina de tendido de cinta tal, capaz de implementar dicho producto semi- acabado, es conocida en el estado de la tecnica y su principio de deposicion se ha descrito en un ejemplo no limitante en el documento FR-A-2 950 285. Una maquina de tendido de cinta tal adaptada a la implementacion del metodo segun la invencion comprende:In Figure 1B, the composite work piece is manufactured by laying the tape, placing the roll of semi-finished product (130) in a tape laying machine. The laying of tape is carried out using tools (150) sculpted to the shape of the workpiece to be made. Such a tape laying machine, capable of implementing said semi-finished product, is known in the state of the art and its deposition principle has been described in a non-limiting example in document FR-A-2 950 285. A such a tape laying machine adapted to the implementation of the method according to the invention comprises:
55
1010
15fifteen
20twenty
2525
3030
- medios para recibir y proporcionar el rollo (130) de producto semi- acabado (115);- means for receiving and providing the roll (130) of semi-finished product (115);
- medios de compresion (160) capaces de aplicar presion (165) sobre el producto semi-acabado (115) durante el tendido de cinta;- compression means (160) capable of applying pressure (165) on the semi-finished product (115) during the laying of tape;
- medios de calentamiento (170) capaces de calentar la superficie de separacion entre el producto semi-acabado (115) que se deposita y la capa (117) depositada anteriormente.- heating means (170) capable of heating the separation surface between the semi-finished product (115) that is deposited and the layer (117) previously deposited.
Los medios de calentamiento (170) se disenan para elevar la temperatura de esa superficie de separacion a una temperatura T, que permite la soldadura del producto semi-acabado pre-consolidado sobre la capa (117) ya depositada, estando esta capa por si misma pre-consolidada. Esta temperatura es proxima a la temperatura de fusion cristalina del polfmero termoplastico, es decir, aproximadamente 360 °C para la PEEK dependiendo de la calidad usada.The heating means (170) are designed to raise the temperature of that separation surface to a temperature T, which allows the welding of the pre-consolidated semi-finished product on the layer (117) already deposited, this layer being itself pre-consolidated This temperature is close to the crystalline melting temperature of the thermoplastic polymer, that is, approximately 360 ° C for PEEK depending on the quality used.
La primera capa pre-consolidada, depositada sobre la herramienta puede, por ejemplo, depositarse de la misma forma sobre una tela movil, por ejemplo una tela de vidrio, tela de vidrio que puede mantenerse sobre la herramienta por adhesivos o por un dispositivo de vacfo. Las capas se depositan asf por tendido de cinta segun las orientaciones definidas hasta que se obtiene la estratificacion deseada. La pieza acabada puede entonces ser desmoldeada y no requiere una consolidacion posterior. Asf, la herramienta (150) usada no requiere resistencia a alta temperatura, o el control de la dilatacion diferencial entre la herramienta y la pieza de trabajo durante dicha etapa de consolidacion.The first pre-consolidated layer, deposited on the tool can, for example, be deposited in the same way on a mobile cloth, for example a glass cloth, glass cloth that can be held on the tool by adhesives or by a vacuum device . The layers are thus deposited by laying the tape according to the defined orientations until the desired stratification is obtained. The finished part can then be unmold and does not require a subsequent consolidation. Thus, the tool (150) used does not require high temperature resistance, or the control of the differential expansion between the tool and the workpiece during said consolidation stage.
La descripcion y las realizaciones a modo de ejemplo anteriores muestran que la invencion logra sus objetivos, en particular hace posible hacer una pieza acabada que comprende un refuerzo continuo de fibra en una matriz termoplastica directamente por tendido de cinta.The description and the exemplary embodiments above show that the invention achieves its objectives, in particular it makes it possible to make a finished piece comprising a continuous fiber reinforcement in a thermoplastic matrix directly by tape laying.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201730617U ES1188008Y (en) | 2012-07-02 | 2012-07-02 | CALIBRATED THICKNESS AND WIDTH TAPE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201730617U ES1188008Y (en) | 2012-07-02 | 2012-07-02 | CALIBRATED THICKNESS AND WIDTH TAPE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES1188008U true ES1188008U (en) | 2017-07-17 |
| ES1188008Y ES1188008Y (en) | 2017-10-09 |
Family
ID=59297468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES201730617U Expired - Fee Related ES1188008Y (en) | 2012-07-02 | 2012-07-02 | CALIBRATED THICKNESS AND WIDTH TAPE |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES1188008Y (en) |
-
2012
- 2012-07-02 ES ES201730617U patent/ES1188008Y/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ES1188008Y (en) | 2017-10-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6721042B2 (en) | Prepreg sheet, manufacturing method thereof, unit layer with skin material, manufacturing method of fiber-reinforced composite material molded product, and fiber-reinforced composite material molded product | |
| US10688738B2 (en) | Wind turbine blades | |
| US9931810B2 (en) | Intermediate material of constant width for fabricating composite parts by a direct process | |
| CN104812556B (en) | Method for forming shaped preform | |
| US9855733B2 (en) | Method for achieving low porosity in composite laminates | |
| ES2465993T3 (en) | New intermediate materials made by crosslinking with interlacing of veil threads | |
| JP6149123B2 (en) | Process for producing continuous carbon fiber reinforced thermoplastic prepreg | |
| EP2170587B1 (en) | A method of manufacturing a curved element made of composite material | |
| CN112313055B (en) | Prepreg sheet and manufacturing method thereof, fiber-reinforced composite material molded product and manufacturing method thereof, and preform manufacturing method | |
| CN106965463B (en) | A kind of continuous fiber reinforced composites processing method | |
| CN102548739A (en) | Thermoplastic composites and methods of making and using same | |
| ES2892277T3 (en) | Fiber treatment method, fiber treatment facility and prepared sliver of treated fibers thus obtained | |
| JPWO2020138473A1 (en) | Preform manufacturing method and composite material molded product manufacturing method and mold | |
| US11820086B2 (en) | Preform shaping method and composite forming method | |
| CN104385626B (en) | Preparation method based on the composite material thin wall housing being interrupted laying | |
| ES1188008U (en) | Calibrated thickness and width tape (Machine-translation by Google Translate, not legally binding) | |
| EP3616890B1 (en) | Preform shaping method and composite forming method | |
| US20160114537A1 (en) | Method and assembly for manufacturing a leaf spring | |
| ES2830825T3 (en) | Process for the manufacture of a composite part from a prepreg material with a semi-crystalline matrix that has an amorphous surface layer | |
| US20140246145A1 (en) | Method for tape laying and consolidation upon deposition of a thermoplastic composite workpiece with fiber reinforcement | |
| JP2012167252A (en) | Method for producing narrow prepreg, and fiber-reinforced plastic | |
| JPWO2020031771A1 (en) | Reinforcing fiber tape material and its manufacturing method, reinforcing fiber laminate using reinforcing fiber tape material and fiber reinforced resin molded body | |
| CN104354449B (en) | A kind of preparation method of the cabin section with microwave absorbing coating | |
| KR101478299B1 (en) | Coating Device of Fabric for Flexible Hose and Its Coating Method | |
| JP6808946B2 (en) | Manufacturing method of fiber reinforced composite molded product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG1K | Utility model granted |
Effective date: 20171003 |
|
| FD1K | Utility model lapsed |
Effective date: 20220930 |